How is this fact important at all? Chrome, Firefox, Opera, and IceWeasel all use Google as the default search engine, essentially granting it a monopoly, unless you change your options... If you're still using anything below IE7, then that's your problem. Might as well whine that Netscape 7 basically only allows the Netscape Search Engine. Honestly though, in all of the most recent version of these browsers, changing the search engine is merely two clicks away, I don't see it affecting much the general trend at all (heck, did anyone even use MSN/Live Search before it was rebranded as Bing?).